Aluminum coating identified by red dye on thread end
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
Classification: Zirconium and articles thereof nesoi
NSN 6130-00-269-8273
NSN 5945-01-620-0083
NSN 5915-00-686-1673
NSN 6645-01-038-6978
NSN 5945-00-045-6255
NSN 5855-00-188-6747
NSN 5950-00-937-3749
NSN 5835-00-838-0707
NSN 5985-01-160-3419
NSN 4140-01-010-8183
NSN 5999-01-025-7490
NSN 7035-01-492-0419